Solve tactical exercises adapted to your level. You can choose between easy and hard or select a specific level from 1 to 10. The easy level approximately comprises levels 1 to 5, while the hard level roughly consists of levels 6 to 10. If you pick a specific level (from 1 to 10), the difficulty of the problems will be more homogeneous. Likewise, if you pick a general level (easy/hard), the difficulty will be more variable.